The repo is Python 3 now, so update hacking to version 3.0 which
supports Python 3.
Fix problems found.
Remove hacking and friends from lower-constraints, they are not needed
for installation.
Change-Id: Ia16e8cbccf7b38be8909aa94e66c04b99f200b89
Cleaned up test-requirements.txt in order to use the latest hacking
package.
Removed the ignored pep8 checks and made the code pass all of them.
Also removed the OpenStack Foundation copyright notice that was put
there accidentally before.
Change-Id: I3d287eb71fc2bf0e4d52856c11cbc8a347cac2ed
"json.dumps" function returns encoded value when specifying
"ensure_ascii=False", so it's not necessary to encode the returned
value.
Change-Id: Ic4834a27d36993cd9f4d2b6945cf108e7149d95b
Closes-Bug: 1569112
